Home / 8,257.11-12,381.54-2,991.90

Finding the Fourth Proportional to 8,257.11, 12,381.54 and 2,991.90

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Solution

The fourth proportional to 8,257.11, 12,381.54 and 2,991.90 is: 4,486.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.11 : 12,381.54 = 2,991.90 : x
  2. Step 2: Convert to fraction form
    8,257.11/12,381.54 = 2,991.90/x
  3. Step 3: Cross multiply
    8,257.11x = 12,381.54 × 2,991.90
  4. Step 4: Simplify right side
    8,257.11x = 37,044,329.53
  5. Step 5: Solve for x
    x = 37,044,329.53/8,257.11
  6. Step 6: Final answer
    x = 4,486.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.